package com.atguigu.lease.web.admin.service.impl;


import io.minio.*;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {

    @Autowired
    private MinioClient minioClient;
    @Autowired
    private MinioProperties minioProperties;
    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
        //1，上传文件
        //1.1判断是否有桶
        boolean bucketExists = minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());
        //1.3没有桶，创建并且设置访问权限（上传需要账号和密码，访问不需要）
        if (!bucketExists) {
            minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
            String config = """
                    {
                                                  "Statement" : [ {
                                                    "Action" : "s3:GetObject",
                                                    "Effect" : "Allow",
                                                    "Principal" : "*",
                                                    "Resource" : "arn:aws:s3:::%s/*"
                                                  } ],
                                                  "Version" : "2012-10-17"
                    }
                    """.formatted(minioProperties.getBucketName());

            minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(minioProperties.getBucketName()).config(config).build());
        }
        //1.4上传文件 putObject -> 上传运行内存的文件||uploadObject -> 上传本地已有的文件

        //优化下文件名
        String objectName = new SimpleDateFormat("yyyyMMdd").format(new Date())+"/" + UUID.randomUUID().toString()+"_"+
                file.getOriginalFilename();
        minioClient.putObject(PutObjectArgs.builder()
                        .bucket(minioProperties.getBucketName())
                        .contentType(file.getContentType())
                        .object(objectName)
                /*
                    参数1：上传文件的输入流
                    参数2：文件的字节大小
                    参数3：partSize文件是否切割上传！ 1GB 5*1024*1024 【+自己切割   0 不切割  -1 自动切割】
                 */
                        .stream(file.getInputStream(),file.getSize(),-1)
                .build());
        //2.拼接回显地址
        return String.join("/", minioProperties.getEndPoint(),minioProperties.getBucketName(),objectName);
    }
}
